Unfortunately, I believe the answer is: not really.
According to the 4350 manual, for acquiring data for a single channel (or TC), you can scan at 10, 50, or 60 readings/second.
However, if you're scanning more than 1 channel, the acquisition rates are 2.8, 8.8, or 9.7 readings/second,
where a reading is 1 scan of 1 channel, so for the actual scan rate, you need to divide the readings/second rate by the number of channels.
Mark